El misterio del diente del narval

The video explores the unique tusk of the narwhal, a whale species. Initially a mystery, the tusk is an incisor tooth that can grow up to 3 meters. Various theories about its purpose include breaking ice, fighting, or attracting mates. Scientific research reveals the tusk is a sensory organ, detecting changes in sea temperature, salt concentration, and chemicals related to food, aiding the narwhal's survival in the Arctic.

What is unique about the narwhal's tusk compared to other teeth?

• It is shorter than the narwhal's body.

• It is found in all female narwhals.

• It is a flexible tooth.

• It is a molar tooth.

What is the length of a narwhal's tusk?

• 2 meters

• 1 meter

• 4 meters

• 3 meters

Which of the following is NOT a suggested purpose of the narwhal's tusk?

• Breaking ice in Arctic waters.

• Attracting mates like peacock feathers.

• Detecting changes in sea temperature.

• Using it as a weapon in fights.

How do scientists believe the narwhal's tusk helps it survive?

• By helping it swim faster.

• By detecting environmental changes.

• By scaring away predators.

• By storing food for winter.

What did scientists discover about the structure of the narwhal's tusk?

• It is equally soft on both sides.

• It is equally hard on both sides.

• It is soft on the outside and hard on the inside.

• It is hard on the outside and soft on the inside.